Roll Tap Series N+RZ/N-RZ Thread Forming Taps for Steels Spiral Fluted Taps (for blind hole) Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe Type Stock (mm) (mm) (mm) (mm) (mm) (mm) (mm) NRZP62.5FP 4P M2.5 × 0.45 G6 46 8.1 14 29 3 2.5 5 4 4 ○ NRZP62.5FB 2P NRZM52.5DP 4P Spiral Fluted Taps (for through hole) M2.5 × 0.35 G5 46 6.3 14 29 3 2.5 5 4 5 △ NRZM52.5DB 2P NRZP52.6FP 4P G5 NRZP52.6FB 2P M2.6 × 0.45 46 8.1 14 29 3 2.5 5 4 4 ○ NRZP62.6FP 4P G6 Spiral Pointed Taps (for through hole) NRZP62.6FB 2P NRZM52.6DP 4P M2.6 × 0.35 G5 46 6.3 14 29 3 2.5 5 4 5 △ NRZM52.6DB 2P NRZP53.0GP 4P G5 Hand Taps NRZP53.0GB 2P NRZP63.0GP 4P ◎ G6 NRZP63.0GB 2P M3 × 0.5 46 9 14 26 4 3.2 6 4 4 NRZP73.0GP 4P G7 ○ NRZP73.0GB 2P Cemented Carbide Taps NRZP83.0GP 4P G8 △ NRZP83.0GB 2P NRZM53.0DP 4P M3 × 0.35 G5 46 6.5 14 26 4 3.2 6 4 5 △ NRZM53.0DB 2P Roll Taps NRZP53.5HP 4P G5 NRZP53.5HB 2P NRZP63.5HP 4P ○ M3.5 × 0.6 G6 52 11 16 29 5 4 7 4 4 NRZP63.5HB 2P Special Thread Taps Simple Inspection Tools NRZP73.5HP 4P G7 △ NRZP73.5HB 2P NRZP54.0IP 4P G5 ○ NRZP54.0IB 2P Pipe Taps NRZP64.0IP 4P G6 ◎ NRZP64.0IB 2P M4 × 0.7 52 11 17 29 5 4 7 4 4 NRZP74.0IP 4P G7 ○ NRZP74.0IB 2P Thread Mills NRZP84.0IP 4P G8 △ NRZP84.0IB 2P NRZM54.0GP 4P G5 NRZM54.0GB 2P M4 × 0.5 NRZM64.0GP 4P 52 9 17 29 5 4 7 4 5 △ Dies G6 NRZM64.0GB 2P G7 NRZM74.0GB NRZP55.0KP 4P G5 △ NRZP55.0KB 2P Center Drills NRZP65.0KP 4P G6 NRZP65.0KB 2P M5 × 0.8 60 13 22 33 5.5 4.5 7 4 4 ○ NRZP75.0KP 4P G7 NRZP75.0KB 2P Centering Tools NRZP85.0KP 4P G8 △ NRZP85.0KB 2P NRZM65.0GP 4P M5 × 0.5 G6 60 9 22 33 5.5 4.5 7 4 5 △ NRZM65.0GB 2P JIS RO-3 ◎=Standard ○=Semi standard △=Made to order 498 For improvement, spec may change without advance notice.